This article has been written by Mara Giamio and its on Blue whale hearts only beating twice a minute during a dive. It speaks on how a team of researchers for the first time put an electrocardiogram tag to a blue whale to trace its heart rate. Up to that point the estimate of the whales heart beat was eleven beats per minute according to scientist prediction. During this experiment which did not harm any whale as it consisted of a suction cup device being attached to the whale which only felt like a tap to the animal. The suction cup device was able to stay attached and collect data for eight and a half hours before it just released and floated up to the surface. Once they tracked down and recovered the device they discovered that the whales heart beats get as low as 2 beats per minute when diving. On the other hand their heart beats jump to 37 beats per minute as they rise to the surface. I believe this article is extremely important, Due to the fact that so little is known about whales’ hearts at this point. Also because the estimates that we had on whales’ heart beat before testing them was far from what it actually was. I find this interesting because these extremely large animals are capable of switching their heart rate so fast for such a consistent amount of time. As the heart rate rises to 37 when they come up to the surface then it increasingly drops back down to such slow speed as 2 beats per minute. The fact that they can manage keeping this cycle up consistently all day everyday is shocking.